Poul-Henning Kamp wrote: > In message <[EMAIL PROTECTED]>, Gerhard Hoffmann write > s: > > >> The question is more if the 100r * 100u do anything to de-noise >> the LED voltage. Close to the carrier probably not. The problem is >> that you nowhere get exact numbers to base a decision on. >> > > Be aware that LED's work both ways: current->light and light->current. > > Their noise spectrum is influenced by the ambient light, in particular > flourecent lights, other discharge types, and, ironically, modulated > LED lamps. > > Poul
In practice this isnt usually a significant problem with a forward biased LED as the photocurrents are relatively small compared to the LED bias current. One can always use a light shield or coat the LED in opaque epoxy. Bruce _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
